Chapter 2 – User interfaces 
UM-23100B-U User manual ATEQ F CLASS Page 20/90 
7. FUNCTIONS OF THE INDICATOR LIGHTS 
The   symbol represents an indicator which is lit. 
Test part OK indicator 
T
 
R
 
Reference side BAD part 
indicator 
T
 
R
 
Test side BAD part indicator 
T
 
R
 
Warning 
T
 
R
 
Sleep 
(intermittently flashing indicator) 
T
 
R
 
Recoverable parts  
(indicators continuously lit) 
T
 
R